Activity (Process)

Solving Inverse Variation Problems

To find the equation that relates two variables in an inverse variation relationship when one pair of values is known, follow this four-step procedure:

  1. Write the formula for inverse variation. Begin with the general equation y=kxy = \frac{k}{x}.
  2. Substitute the given values for the variables. Replace xx and yy with the known pair of values.
  3. Solve for the constant of variation. Multiply both sides by the known value of xx to isolate kk.
  4. Write the equation that relates xx and yy. Substitute the value of kk back into y=kxy = \frac{k}{x} to obtain the specific equation.

This procedure mirrors the one used for direct variation problems — only the starting formula changes from y=kxy = kx to y=kxy = \frac{k}{x}. Once the equation is established, it can be used to determine the value of yy for any other value of xx.

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Updated 2026-05-01

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